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UC3852N PDF预览

UC3852N

更新时间： 2024-11-23 12:02:03
品牌 Logo 应用领域
德州仪器 - TI 稳压器
页数 文件大小 规格书
10页 405K
描述
High Power-Factor Preregulator

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中文翻译

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UC3852N 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：DIP
包装说明：DIP, DIP8,.3针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：0.99模拟集成电路 - 其他类型：POWER FACTOR CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：30 V最小输入电压：12.5 V
标称输入电压：24 VJESD-30 代码：R-PDIP-T8
JESD-609代码：e4长度：9.81 mm
功能数量：1端子数量：8
最高工作温度：70 °C最低工作温度：
最大输出电流：1 A封装主体材料：PLASTIC/EPOXY
封装代码：DIP封装等效代码：DIP8,.3
封装形状：RECTANGULAR封装形式：IN-LINE
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
座面最大高度：5.08 mm子类别：Switching Regulator or Controllers
最大供电电流 (Isup)：6 mA最大供电电压 (Vsup)：30 V
表面贴装：NO切换器配置：SINGLE
最大切换频率：200 kHz技术：BIPOLAR
温度等级：COMMERCIAL端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：THROUGH-HOLE端子节距：2.54 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：6.35 mm

UC3852N 数据手册

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UC1852  
UC2852  
UC3852  
High Power-Factor Preregulator  
FEATURES  
DESCRIPTION  
The UC1852 provides a low-cost solution to active power-factor correction (PFC)  
for systems that would otherwise draw high peak current pulses from AC power  
lines. This circuit implements zero-current switched boost conversion, producing  
sinusoidal input currents with a minimum of external components, while keeping  
peak current substantially below that of fully-discontinuous converters.  
•
Low-Cost Power Factor  
Correction  
•
•
•
•
•
•
•
•
•
Power Factor Greater Than 0.99  
Few External Parts Required  
Controlled On-Time Boost PWM  
Zero-Current Switching  
The UC1852 provides controlled switch on-time to regulate the output bulk DC  
voltage, an off-time defined by the boost inductor, and a zero-current sensing  
circuit to reactivate the switch cycle. Even though switching frequency varies with  
both load and instantaneous line voltage, it can be maintained within a reasonable  
range to minimize noise generation.  
Limited Peak Current  
Min and Max Frequency Limits  
Starting Current Less Than 1mA  
High-Current FET Drive Output  
Under-Voltage Lockout  
While allowing higher peak switch currents than continuous PFCs such as the  
UC1854, this device offers less external circuitry and smaller inductors, yet better  
performance and easier line-noise filtering than discontinuous current PFCs with  
no sacrifice in complexity or cost. The ability to obtain a power factor in excess of  
0.99 makes the UC1852 an optimum choice for low-cost applications in the 50 to  
500 watt power range. Protection features of these devices include under-voltage  
lockout, output clamping, peak-current limiting, and maximum-frequency  
clamping.  
The UC1852 family is available in 8-pin plastic and ceramic dual in-line packages,  
and in the 8-pin small outline IC package (SOIC). The UC1852 is specified for  
operation from -55°C to +125°C, the UC2852 is specified for operation from -40°C  
to +85°C, and the UC3852 is specified for operation from 0°C to +70°C.  
TYPICAL APPLICATION  
UDG-92001  
10/94  
1234567...10

中文翻译

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UC3852N 替代型号

型号 品牌 替代类型 描述 数据表
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